improved docs for gpu_spreadinterponly and upsampfac=1 advanced use c… #414

	name: cmake ci linux macos windows

	on: [push, pull_request]

	jobs:
	prepare:
	runs-on: ubuntu-latest
	outputs:
	matrix: ${{ steps.generate_matrix.outputs.matrix }}
	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	- name: Generate matrix
	id: generate_matrix
	run: \|
	echo "MACOSX_DEPLOYMENT_TARGET=11.0" >> $GITHUB_ENV
	MATRIX=$(python3 ${{ github.workspace }}/.github/workflows/generate_cmake_matrix.py)
	echo "matrix=$MATRIX" >> $GITHUB_OUTPUT
	cmake-ci:
	runs-on: ${{ matrix.os }}
	needs: prepare
	strategy:
	fail-fast: false
	matrix: ${{ fromJSON(needs.prepare.outputs.matrix) }}
	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	- name: Setup Cpp
	uses: aminya/setup-cpp@v1
	with:
	compiler: ${{ matrix.toolchain }}
	vcvarsall: ${{ contains(matrix.os, 'windows') }}
	cmake: true
	ninja: true
	vcpkg: false
	cppcheck: false
	clangtidy: false
	- name: Set min macOS version and install fftw
	if: runner.os == 'macOS'
	run: \|
	brew install fftw
	- name: Install fftw
	if: runner.os == 'linux'
	run: \|
	sudo apt update
	sudo apt install -y libfftw3-dev
	- name: Configure Cmake
	run: \|
	cmake -S . -B ./build -G Ninja -DCMAKE_BUILD_TYPE:STRING=${{matrix.build_type}} -DFINUFFT_ARCH_FLAGS=${{ matrix.arch_flags }} -DFINUFFT_BUILD_TESTS=ON -DFINUFFT_STATIC_LINKING=${{matrix.finufft_static_linking}} -DFINUFFT_USE_DUCC0=${{ matrix.ducc_fft }}
	- name: Build
	run: \|
	cmake --build ./build --config ${{matrix.build_type}}

	- name: Test
	working-directory: ./build
	run: \|
	ctest -C ${{matrix.build_type}} --output-on-failure

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